CN106403143B - Temperature and humidity independent processing air conditioning system and control method thereof - Google Patents

Temperature and humidity independent processing air conditioning system and control method thereof Download PDF

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Publication number
CN106403143B
CN106403143B CN201510466499.XA CN201510466499A CN106403143B CN 106403143 B CN106403143 B CN 106403143B CN 201510466499 A CN201510466499 A CN 201510466499A CN 106403143 B CN106403143 B CN 106403143B
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indoor
difference
temperature
temperature difference
heat exchanger
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CN201510466499.XA
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Chinese (zh)
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CN106403143A (en
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刘江彬
宋强
刘景升
李银银
金伟灿
李珍
郭永刚
王冰
刘晓蕾
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青岛海尔空调电子有限公司
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30Arrangement or mounting of heat-exchangers

Abstract

The invention provides an air conditioning system capable of independently processing temperature and humidity and a control method thereof. According to the air conditioning system with independent temperature and humidity processing and the control method thereof, the solution regeneration heat exchanger and the dehumidification cooling heat exchanger are additionally arranged on the air conditioner, so that the indoor humidity is independently controlled through the solution, and the functions of refrigeration and dehumidification in summer and heating and humidification in winter can be realized.

Description

Temperature and humidity independent processing air conditioning system and control method thereof

Technical Field

The invention belongs to the field of air conditioning equipment, and particularly relates to an air conditioning system capable of independently processing temperature and humidity and a control method thereof.

Background

Solution dehumidification is studied more at home and abroad, and in the field of air conditioning, two common methods for fresh air dehumidification are adopted, namely, firstly, air is cooled to the dew point through a heat exchange medium, and then the dehumidified air is reheated and conveyed to a room. The other method is traditional solution dehumidification, which has high temperature, and the dehumidified air has high temperature, and needs to be cooled and then delivered to the room.

Chinese patent application number 201410419810.0 is named as a humiture independent control fresh air handling unit and discloses a humiture independent control's unit, adopts solution to dehumidify, reuses cold water coil pipe cooling, reaches the air temperature of needs, belongs to traditional earlier overheated dehumidification cooling down again, causes the waste of the energy to can only dehumidify can not the humidification.

The Chinese patent application No. 201210237771.3 discloses a temperature and humidity independent processing and purifying air conditioning unit, which adopts a two-stage coil series connection mode to process air respectively, two sections of coils bear latent heat load and sensible heat load respectively, the system is complex and can only dehumidify but not humidify.

Disclosure of Invention

Therefore, the invention provides a temperature and humidity independent processing air conditioning system capable of independently controlling indoor temperature and humidity and a control method thereof.

The utility model provides a humiture independent processing air conditioning system, includes compressor, outdoor heat exchanger, indoor heat exchanger, outdoor fan, indoor fan, room temperature sensor and indoor humidity transducer, the compressor outdoor heat exchanger with indoor heat exchanger establishes ties in proper order and forms the return circuit, still includes dehumidification cooling heat exchanger, solution regeneration heat exchanger and dehumidification heat exchanger, dehumidification cooling heat exchanger set up in indoor fan is towards indoor one side, and respectively through the pipeline with dehumidification heat exchanger with indoor heat exchanger carries out the heat exchange, solution regeneration heat exchanger set up in outdoor fan is close to indoor one side, and respectively through the pipeline with dehumidification heat exchanger with outdoor heat exchanger carries out the heat exchange.

And a circulating water pump of the dehumidification cooling heat exchanger is arranged between the dehumidification cooling heat exchanger and the indoor heat exchanger, and heat exchange is carried out through secondary refrigerant.

And a circulating water pump of the solution regeneration heat exchanger is arranged between the solution regeneration heat exchanger and the outdoor heat exchanger, and heat exchange is carried out through secondary refrigerant.

The secondary refrigerant is water.

The solution regeneration heat exchanger and the dehumidification cooling heat exchanger are connected in series through a solution pipe, a solution pump and a solution flow regulating valve are further included between the solution regeneration heat exchanger and the dehumidification cooling heat exchanger, and dehumidification solution is arranged in the solution pipe.

The dehumidifying solution is a lithium chloride solution.

A control method of an air conditioning system with independent temperature and humidity processing comprises a cooling and heating load processing control method, a cooling and humidity load processing control method, a heating and heating load processing control method and a heating and humidity load processing control method.

The refrigeration heat load processing control method comprises the following steps:

setting the set time and the set temperature difference of the high-speed operation of the indoor fan;

reading the indoor environment temperature, and defining the difference between the indoor environment temperature and the set temperature of the indoor air conditioner as a refrigerating indoor temperature difference;

comparing the temperature difference in the refrigerating chamber with the set temperature difference;

if the temperature difference in the refrigerating chamber is greater than the set temperature difference, controlling the indoor fan to run at a high speed and time, and if the time is greater than the set time, increasing the flow of the circulating water pump of the dehumidifying and cooling heat exchanger;

if the temperature difference in the refrigerating chamber is between 0 ℃ and the set temperature difference, controlling the indoor fan to operate at a medium speed;

if the temperature difference in the refrigerating chamber is less than 0 ℃, controlling the indoor fan to operate at a low speed;

and if the temperature difference in the refrigerating chamber is less than minus 1 ℃, controlling the indoor fan to operate at a low speed and reducing the flow of the circulating water pump of the dehumidifying cooling heat exchanger.

The refrigeration wet load processing control method comprises the following steps:

setting a relative humidity difference value and a temperature difference in a room;

reading indoor environment temperature and indoor relative humidity, defining the difference between the indoor environment temperature and the set air conditioner temperature as a refrigerating indoor temperature difference, and calculating the difference between the indoor relative humidity and the set air conditioner relative humidity;

comparing the refrigerating indoor temperature difference with the set temperature difference, and comparing the refrigerating indoor relative humidity difference with the set relative humidity difference;

if the temperature difference in the refrigerating chamber is greater than the set temperature difference or the relative humidity difference in the refrigerating chamber is greater than the set indoor relative humidity difference, opening the solution flow regulating valve to the maximum;

if the difference in temperature in the refrigerating chamber is less than the set temperature difference and the difference in relative humidity in the refrigerating chamber is less than the set relative humidity difference, the opening of the solution flow regulating valve is reduced.

The heating heat load processing control method includes:

setting the set time and the set temperature difference of the high-speed operation of the indoor fan;

reading indoor environment temperature, and defining the difference between the indoor set environment temperature and the indoor air conditioner temperature as heating indoor temperature difference;

comparing the heating indoor temperature difference with the set temperature difference;

if the indoor temperature difference of the heating system is smaller than the set temperature difference, controlling the indoor fan to run at a high speed and timing, and if the time is longer than the set time, increasing the flow of the circulating water pump of the dehumidification cooling heat exchanger;

if the heating indoor temperature difference is between 0 ℃ and the set temperature difference, controlling the indoor fan to operate at a medium speed;

if the heating indoor temperature difference is less than 0 ℃, controlling the indoor fan to operate at a low speed;

and if the temperature difference in the heating chamber is less than minus 1 ℃, controlling the indoor fan to operate at a low speed and reducing the flow of the circulating water pump of the dehumidifying cooling heat exchanger.

The heating and humidity load processing control method comprises the following steps:

setting a relative humidity difference value and a temperature difference in a room;

reading indoor environment temperature and indoor relative humidity, defining the difference between the set indoor air conditioner temperature and the indoor environment temperature as heating indoor temperature difference, and defining the difference between the set indoor air conditioner relative humidity value and the indoor relative humidity value as heating indoor relative humidity difference;

comparing the heating indoor temperature difference with the set temperature difference, and comparing the heating indoor relative humidity difference with the set relative humidity difference;

if the temperature difference in the heating chamber is greater than the set temperature difference or the relative humidity difference in the heating chamber is greater than the set relative humidity difference, opening the solution flow regulating valve to the maximum;

if the indoor difference in temperature that heats is less than set for the difference in temperature just the indoor relative humidity difference that heats is less than set for the relative humidity difference, then will solution flow control valve aperture reduces.

The set temperature difference is 2 ℃ and the set relative humidity difference is 10%.

According to the air conditioning system with independent temperature and humidity processing and the control method thereof, the solution regeneration heat exchanger and the dehumidification cooling heat exchanger are additionally arranged on the air conditioner, so that the indoor humidity is independently controlled through the solution, and the functions of refrigeration and dehumidification in summer and heating and humidification in winter can be realized.

Drawings

Fig. 1 is a schematic diagram of a temperature and humidity independent processing air conditioning system provided by the invention.

Detailed Description

The following detailed description is given by way of specific embodiments in conjunction with the accompanying drawings.

The utility model provides a humiture independent processing air conditioning system, includes compressor 1, outdoor heat exchanger 2, indoor heat exchanger 3, outdoor fan 4, indoor fan 5, room temperature sensor and indoor humidity transducer, compressor 1 outdoor heat exchanger 2 with indoor heat exchanger 3 establishes ties in proper order and forms the return circuit, still includes dehumidification cooling heat exchanger 8, solution regenerative heat exchanger 9 and dehumidification heat exchanger 10, dehumidification cooling heat exchanger 8 set up in indoor fan 5 towards indoor one side, and respectively through the pipeline with dehumidification heat exchanger 10 with indoor heat exchanger 3 carries out the heat exchange, solution regenerative heat exchanger 9 set up in outdoor fan 4 is close to indoor one side, and respectively through the pipeline with dehumidification heat exchanger 10 with outdoor heat exchanger 2 carries out the heat exchange.

A dehumidification cooling heat exchanger circulating water pump 81 is arranged between the dehumidification cooling heat exchanger 8 and the indoor heat exchanger 3, and heat exchange is carried out through secondary refrigerant.

A solution regeneration heat exchanger circulating water pump 91 is arranged between the solution regeneration heat exchanger 9 and the outdoor heat exchanger 2, and heat exchange is carried out through secondary refrigerant.

The secondary refrigerant is water.

A solution pump 101 and a solution flow regulating valve 102 which are connected with the dehumidifying heat exchanger 10 in series through a solution pipe are further arranged between the solution regenerating heat exchanger 9 and the dehumidifying cooling heat exchanger 8, and dehumidifying solution is arranged in the solution pipe.

The dehumidification solution is a lithium chloride solution, wherein the temperature of the dehumidification solution passing through the dehumidification cooling heat exchanger 8 is 17 ℃ at room temperature, the temperature of the dehumidification solution passing through the solution regeneration heat exchanger 9 is 38 ℃, the temperature of the solution entering the inlet of the dehumidification cooling heat exchanger 8 is reduced through the dehumidification heat exchanger 10, the temperature of the solution entering the inlet of the solution regeneration heat exchanger 9 is increased, the heat load of the dehumidification cooling heat exchanger is reduced through the dehumidification heat exchanger 10, the heat required by the solution regeneration heat exchanger 9 is reduced, and the purpose of energy conservation is achieved.

A control method of an air conditioning system with independent temperature and humidity processing comprises a cooling and heating load processing control method, a cooling and humidity load processing control method, a heating and heating load processing control method and a heating and humidity load processing control method.

The refrigeration heat load processing control method comprises the following steps:

setting the set time and the set temperature difference of the high-speed operation of the indoor fan 5;

reading the indoor environment temperature, and calculating the indoor temperature difference of the refrigeration according to the indoor environment temperature and the set temperature of the air conditioner;

comparing the temperature difference in the refrigerating chamber with the set temperature difference;

if the temperature difference in the refrigerating chamber is greater than the set temperature difference, controlling the indoor fan 5 to run at a high speed and time, if the time is greater than the set time, increasing the flow of the circulating water pump 81 of the dehumidifying cooling heat exchanger, if the temperature difference in the refrigerating chamber is still greater than 2 ℃, adopting control (refrigerant flow control and compressor 1 frequency control) for increasing the output cold quantity of the evaporator, wherein the flow of the output cold quantity is controlled to be the highest priority, controlling the refrigerant flow times by controlling the opening of an indoor electronic expansion valve, and if the two methods can not increase the output cold quantity of the evaporator, achieving the purpose of increasing the cold quantity control by adjusting the running frequency of the compressor 1;

if the temperature difference in the refrigerating chamber is between 0 ℃ and the set temperature difference, controlling the indoor fan 5 to operate at a medium speed;

if the temperature difference in the refrigerating chamber is less than 0 ℃, controlling the indoor fan 5 to operate at a low speed;

and if the temperature difference in the refrigerating chamber is less than minus 1 ℃, controlling the indoor fan 5 to run at a low speed and reducing the flow of the circulating water pump 81 of the dehumidifying cooling heat exchanger.

The refrigeration wet load processing control method comprises the following steps:

setting a relative humidity difference value and a temperature difference in a room;

reading indoor environment temperature and indoor relative humidity, calculating refrigerating indoor temperature difference through the indoor environment temperature and an air conditioner set temperature, and calculating refrigerating indoor relative humidity difference through the indoor relative humidity and the air conditioner set relative humidity;

comparing the refrigerating indoor temperature difference with the set temperature difference, and comparing the refrigerating relative humidity difference with the set relative humidity difference;

if the temperature difference in the refrigerating chamber is greater than the set temperature difference or the relative humidity difference in the refrigerating chamber is greater than the set indoor relative humidity difference, the solution flow regulating valve 102 is opened to the maximum;

and if the temperature difference in the refrigerating chamber is smaller than the set temperature difference and the relative humidity difference in the refrigerating chamber is smaller than the set relative humidity difference, reducing the opening degree of the solution flow regulating valve 102.

The heating heat load processing control method includes:

setting the set time and the set temperature difference of the high-speed operation of the indoor fan 5;

reading the indoor environment temperature, and calculating the heating indoor temperature difference through the indoor environment temperature and the air conditioner set temperature;

comparing the heating indoor temperature difference with the set temperature difference;

if the heating indoor temperature difference is smaller than the set temperature difference, controlling the indoor fan 5 to run at a high speed and time, if the time is longer than the set time, increasing the flow of the circulating water pump 81 of the dehumidification cooling heat exchanger, if the heating indoor temperature difference of the room is still larger than 2 ℃, adopting a method for increasing the heat output of the condenser to control the flow of the water output side to be the highest priority, controlling the flow of the refrigerant to be the second time by controlling the opening degree of an indoor electronic expansion valve, and if the two methods can not increase the heat output of the condenser, adjusting the operating frequency of the compressor 1 to achieve the purpose of heat increase control;

if the heating indoor temperature difference is between 0 ℃ and the set temperature difference, controlling the indoor fan 5 to operate at a medium speed;

if the heating indoor temperature difference is less than 0 ℃, controlling the indoor fan 5 to operate at a low speed;

and if the temperature difference in the heating chamber is less than minus 1 ℃, controlling the indoor fan 5 to run at a low speed and reducing the flow of the circulating water pump 81 of the dehumidifying cooling heat exchanger.

The heating and humidity load processing control method comprises the following steps:

setting a relative humidity difference value and a temperature difference in a room;

reading indoor environment temperature and indoor relative humidity, calculating heating indoor temperature difference according to the indoor environment temperature and an air conditioner set temperature, and calculating heating indoor humidity difference according to the indoor relative humidity value and the air conditioner set relative humidity value;

comparing the heating indoor temperature difference with the set temperature difference, and comparing the heating indoor relative humidity difference with the set relative humidity difference;

if the temperature difference in the heating chamber is greater than the set temperature difference or the relative humidity difference in the heating chamber is greater than the set relative humidity difference, the solution flow regulating valve 102 is opened to the maximum;

and if the indoor heating temperature difference is smaller than the set temperature difference and the indoor heating relative humidity difference is smaller than the set relative humidity difference, reducing the opening degree of the solution flow regulating valve 102.

The set temperature difference is 2 ℃ and the set relative humidity difference is 10%.

According to the independent temperature and humidity processing air conditioning system and the control method thereof, the solution regeneration heat exchanger 9 and the dehumidification cooling heat exchanger 8 are additionally arranged on the air conditioner, so that the indoor humidity is independently controlled through the solution, and the functions of refrigeration and dehumidification in summer and heating and humidification in winter can be realized.

From the foregoing, it should be noted that only the preferred embodiment of the present invention has been described, and it should be understood that various modifications and improvements can be made by those skilled in the art without departing from the principle of the present invention, and these modifications and improvements should be construed as the protection scope of the present invention.

Claims (7)

1. The utility model provides a humiture independent processing air conditioning system, includes compressor, outdoor heat exchanger, indoor heat exchanger, outdoor fan, indoor fan, room temperature sensor and indoor humidity transducer, the compressor outdoor heat exchanger with indoor heat exchanger establishes ties in proper order and forms return circuit, its characterized in that: the indoor heat exchanger is arranged on one side, facing the indoor, of the indoor fan and exchanges heat with the dehumidification heat exchanger and the indoor heat exchanger through pipelines respectively; a solution pump and a solution flow regulating valve which are connected with the dehumidifying heat exchanger in series through a solution pipe are also arranged between the solution regenerating heat exchanger and the dehumidifying cooling heat exchanger; a circulating water pump of the dehumidification cooling heat exchanger is arranged between the dehumidification cooling heat exchanger and the indoor heat exchanger, and heat exchange is carried out through secondary refrigerant; a circulating water pump of the solution regeneration heat exchanger is arranged between the solution regeneration heat exchanger and the outdoor heat exchanger, and heat exchange is carried out through secondary refrigerant; the secondary refrigerant is water.
2. The independent temperature and humidity processing air conditioning system according to claim 1, characterized in that: the solution pipe is internally provided with a dehumidifying solution.
3. The independent temperature and humidity processing air conditioning system according to claim 2, characterized in that: the dehumidifying solution is a lithium chloride solution.
4. The method for controlling the temperature and humidity independent processing air conditioning system according to any one of claims 1 to 3, characterized by comprising the steps of: the method comprises a refrigeration heat load processing control method, a refrigeration humidity load processing control method, a heating heat load processing control method and a heating humidity load processing control method;
the refrigeration heat load processing control method comprises the following steps:
setting the set time and the set temperature difference of the high-speed operation of the indoor fan;
reading the indoor environment temperature, and defining the difference between the indoor environment temperature and the set temperature of the indoor air conditioner as a refrigerating indoor temperature difference;
comparing the temperature difference in the refrigerating chamber with the set temperature difference;
if the temperature difference in the refrigerating chamber is greater than the set temperature difference, controlling the indoor fan to run at a high speed and time, and if the time is greater than the set time, increasing the flow of the circulating water pump of the dehumidifying and cooling heat exchanger;
if the temperature difference in the refrigerating chamber is between 0 ℃ and the set temperature difference, controlling the indoor fan to operate at a medium speed;
if the temperature difference in the refrigerating chamber is less than 0 ℃, controlling the indoor fan to operate at a low speed;
if the temperature difference in the refrigerating chamber is less than minus 1 ℃, controlling the indoor fan to run at a low speed and reducing the flow of the circulating water pump of the dehumidifying cooling heat exchanger; the refrigeration wet load processing control method comprises the following steps:
setting a relative humidity difference value and a temperature difference in a room;
reading indoor environment temperature and indoor relative humidity, defining the difference between the indoor environment temperature and the set air conditioner temperature as a refrigerating indoor temperature difference, and defining the difference between the indoor relative humidity and the set air conditioner relative humidity as a refrigerating indoor relative humidity difference;
comparing the refrigerating indoor temperature difference with the set temperature difference, and comparing the refrigerating indoor relative humidity difference with the set relative humidity difference;
if the temperature difference in the refrigerating chamber is greater than the set temperature difference or the relative humidity difference in the refrigerating chamber is greater than the set indoor relative humidity difference, opening the solution flow regulating valve to the maximum;
if the difference in temperature in the refrigerating chamber is less than the set temperature difference and the difference in relative humidity in the refrigerating chamber is less than the set relative humidity difference, the opening of the solution flow regulating valve is reduced.
5. The control method according to claim 4, characterized in that: the heating heat load processing control method includes:
setting the set time and the set temperature difference of the high-speed operation of the indoor fan;
reading indoor environment temperature, and defining the difference between the indoor set environment temperature and the indoor air conditioner temperature as heating indoor temperature difference;
comparing the heating indoor temperature difference with the set temperature difference;
if the indoor temperature difference of the heating system is smaller than the set temperature difference, controlling the indoor fan to run at a high speed and timing, and if the time is longer than the set time, increasing the flow of the circulating water pump of the dehumidification cooling heat exchanger;
if the heating indoor temperature difference is between 0 ℃ and the set temperature difference, controlling the indoor fan to operate at a medium speed;
if the heating indoor temperature difference is less than 0 ℃, controlling the indoor fan to operate at a low speed;
and if the temperature difference in the heating chamber is less than minus 1 ℃, controlling the indoor fan to operate at a low speed and reducing the flow of the circulating water pump of the dehumidifying cooling heat exchanger.
6. The control method according to claim 4, characterized in that: the heating and humidity load processing control method comprises the following steps:
setting a relative humidity difference value and a temperature difference in a room;
reading indoor environment temperature and indoor relative humidity, defining the difference between the set indoor air conditioner temperature and the indoor environment temperature as heating indoor temperature difference, and defining the difference between the set indoor air conditioner relative humidity value and the indoor relative humidity value as heating indoor relative humidity difference;
comparing the heating indoor temperature difference with the set temperature difference, and comparing the heating indoor relative humidity difference with the set relative humidity difference;
if the temperature difference in the heating chamber is greater than the set temperature difference or the relative humidity difference in the heating chamber is greater than the set relative humidity difference, opening the solution flow regulating valve to the maximum;
if the indoor difference in temperature that heats is less than set for the difference in temperature just the indoor relative humidity difference that heats is less than set for the relative humidity difference, then will solution flow control valve aperture reduces.
7. The control method according to any one of claims 4 to 6, characterized in that: the set temperature difference is 2 ℃ and the set relative humidity difference is 10%.
CN201510466499.XA 2015-07-31 2015-07-31 Temperature and humidity independent processing air conditioning system and control method thereof CN106403143B (en)

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CN108507047B (en) * 2017-02-28 2020-10-02 青岛海尔智能技术研发有限公司 Air conditioning system and control method thereof
CN110822655A (en) * 2018-08-10 2020-02-21 青岛海尔空调器有限总公司 Air conditioning clothes and control method thereof
CN111336587A (en) * 2020-03-18 2020-06-26 宁波奥克斯电气股份有限公司 Dehumidification device and method, dehumidification capacity recovery system and method and air conditioner

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Effective date of registration: 20201103

Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China

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Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China

Patentee before: QINGDAO HAIER AIR CONDITIONER ELECTRIC Co.,Ltd.